package com.nearby.android.unitl;

import java.util.List;

import android.content.Context;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.net.wifi.WifiManager.WifiLock;

/*<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" ></uses-permission>  
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" ></uses-permission>  
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" ></uses-permission>  
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" ></uses-permission> */
public class WifiAdmin {
	//定义WifiManager对象
	private WifiManager mWifiManager;
	//定义WifiInfo对象
	private WifiInfo mWifiInfo;
	//扫描出的网络连接列表
	private List<ScanResult> mWifiList;
	//网络连接列表
	private List<WifiConfiguration> mWifiConfiguration;
	//定义一个WifiLock
	WifiLock mWifiLock;
	//构造器
	public WifiAdmin(Context context){
		//取得WifiManager对象
		mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
		//取得WifiInfo对象
		mWifiInfo = mWifiManager.getConnectionInfo();
	}
	//打开WIFI
	public void openWifi(){
		if(!mWifiManager.isWifiEnabled()){
			mWifiManager.setWifiEnabled(true);
		}
	}
	//关闭WIFI
	public void closeWifi(){
		if(mWifiManager.isWifiEnabled()){
			mWifiManager.setWifiEnabled(false);
		}
	}
	//检查当前WIFI状态
	public int checkState(){
		return mWifiManager.getWifiState();
	}
	//锁定WifiLock
	public void acquireWifiLock(){
		mWifiLock.acquire();
	}
	//解锁WifiLock
	public void releaseWifiLock(){
		if(mWifiLock.isHeld()){
			mWifiLock.acquire();
		}
	}
	//创建一个WifiLock
	public void creatWifiLock(){
		mWifiLock = mWifiManager.createWifiLock("Test");
	}
	//得到配置好的网络
	public List<WifiConfiguration> getConfiguration(){
		return mWifiConfiguration;
	}
	//指定配置好的网络进行连接
	public void connectConfiguration(int index){
		//索引大于配置好的网络索引返回
		if(index > mWifiConfiguration.size()){
			return;
		}
		//连接配置好的指定ID的网络
		mWifiManager.enableNetwork(mWifiConfiguration.get(index).networkId, true);
	}
	public void startScan(){
		mWifiManager.startScan();
		//得到扫描结果
		mWifiList = mWifiManager.getScanResults();
		//得到配置好的网络连接
		mWifiConfiguration = mWifiManager.getConfiguredNetworks();
	}
	//得到网络列表
	public List<ScanResult> getWifiList(){
		return mWifiList;
	}
	//查看扫描结果
	public StringBuilder lookUpScan(){
		StringBuilder stringBuilder = new StringBuilder();
		for(int i=0; i<mWifiList.size(); i++){
			stringBuilder.append("Index_" + new Integer(i + 1).toString() + ":");
			//将ScanResult信息转换成一个字符串包
			//其中把包括：BSSID、SSID、capabilities、frequency、level
			stringBuilder.append(mWifiList.get(i).toString());
			stringBuilder.append("/n");
		}
		return stringBuilder;
	}
	//得到MAC地址
	public String getMacAddress(){
		return (mWifiInfo == null) ? "NULL" : mWifiInfo.getMacAddress();
	}
	//得到接入点的BSSID
	public String getBSSID(){
		return (mWifiInfo == null) ? "NULL" : mWifiInfo.getSSID();
	}
	//得到IP地址
	public int getIpAddress(){
		return (mWifiInfo == null) ? 0 : mWifiInfo.getIpAddress();
	}
	//得到连接的ID
	public int getNetworkId(){
		return (mWifiInfo == null) ? 0 : mWifiInfo.getNetworkId();
	}
	//得到WifiInfo的所有信息包
	public String getWifiInfo(){
		return (mWifiInfo == null) ? "NULL" : mWifiInfo.toString();
	}
	//添加一个网络并连接
	public void addNetwork(WifiConfiguration wcg){
		int wcgID = mWifiManager.addNetwork(wcg);
		boolean b = mWifiManager.enableNetwork(wcgID, true);
		System.out.println("a--" + wcgID);
		System.out.println("b--" + b);
	}
	//断开指定ID的网络
	public void disconnectWifi(int netId){
		mWifiManager.disableNetwork(netId);
		mWifiManager.disconnect();
	}
	//然后是一个实际应用方法, 只验证过没有密码的情况
	public WifiConfiguration CreateWifiInfo(String SSID, String Password, int Type){
		WifiConfiguration config = new WifiConfiguration();
		config.allowedAuthAlgorithms.clear();
		config.allowedGroupCiphers.clear();
		config.allowedKeyManagement.clear();
		config.allowedPairwiseCiphers.clear();
		config.allowedProtocols.clear();
		config.SSID = "\"" + SSID + "\"";
		
		WifiConfiguration tempConfig = this.IsExists(SSID);
		if(tempConfig != null){
			mWifiManager.removeNetwork(tempConfig.networkId);
		}
		if(Type == 1){//WIFICIHER_NOPASS
			config.wepKeys[0] = "";
			config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
			config.wepTxKeyIndex = 0;
		}
		if(Type == 2) //WIFICIPHER_WEP  
        {   
            config.hiddenSSID = true;  
            config.wepKeys[0]= "\""+Password+"\"";   
            config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED);   
            config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);   
            config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);   
            config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);   
            config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);   
            config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);   
            config.wepTxKeyIndex = 0;   
        }   
        if(Type == 3) //WIFICIPHER_WPA  
        {   
	        config.preSharedKey = "\""+Password+"\"";   
	        config.hiddenSSID = true;     
	        config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);     
	        config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);                           
	        config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);                           
	        config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);                      
	        //config.allowedProtocols.set(WifiConfiguration.Protocol.WPA);    
	        config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);  
	        config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);  
	        config.status = WifiConfiguration.Status.ENABLED;     
        } 
        return config;
	}
	private WifiConfiguration IsExists(String SSID)    
    {    
        List<WifiConfiguration> existingConfigs = mWifiManager.getConfiguredNetworks();    
           for (WifiConfiguration existingConfig : existingConfigs)     
           {    
             if (existingConfig.SSID.equals("\""+SSID+"\""))    
             {    
                 return existingConfig;    
             }    
           }    
        return null;     
    } 
	
}
